DETROIT — The Big Three was down to two Friday afternoon. Hideki Matsuyama, the reigning Masters champion, tested positive for COVID-19 and was forced to withdraw from the Rocket Mortgage Classic just minutes before his second-round tee time at Detroit Golf Club. His playing partners, Phil Mickelson and Rickie Fowler, carried on as a twosome. "It's disappointing to receive this news," Matsuyama said in a statement released through PGA Tour communications. "I will take all the necessary precautions to ensure the health and safety of all others. "I appreciate and thank everyone for their concern...